| Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame^] | 1 | #ifndef _GSMTAP_H |
| 2 | #define _GSMTAP_H |
| 3 | |
| 4 | /* gsmtap header, pseudo-header in front of the actua GSM payload*/ |
| 5 | |
| 6 | #include <stdint.h> |
| 7 | |
| 8 | #define GSMTAP_VERSION 0x01 |
| 9 | |
| 10 | #define GSMTAP_TYPE_UM 0x01 |
| 11 | #define GSMTAP_TYPE_ABIS 0x02 |
| 12 | #define GSMTAP_TYPE_UM_BURST 0x03 /* raw burst bits */ |
| 13 | |
| 14 | #define GSMTAP_BURST_UNKNOWN 0x00 |
| 15 | #define GSMTAP_BURST_FCCH 0x01 |
| 16 | #define GSMTAP_BURST_PARTIAL_SCH 0x02 |
| 17 | #define GSMTAP_BURST_SCH 0x03 |
| 18 | #define GSMTAP_BURST_CTS_SCH 0x04 |
| 19 | #define GSMTAP_BURST_COMPACT_SCH 0x05 |
| 20 | #define GSMTAP_BURST_NORMAL 0x06 |
| 21 | #define GSMTAP_BURST_DUMMY 0x07 |
| 22 | #define GSMTAP_BURST_ACCESS 0x08 |
| 23 | #define GSMTAP_BURST_NONE 0x09 |
| 24 | |
| 25 | #define GSMTAP_UDP_PORT 4729 |
| 26 | |
| 27 | struct gsmtap_hdr { |
| 28 | uint8_t version; /* version, set to 0x01 currently */ |
| 29 | uint8_t hdr_len; /* length in number of 32bit words */ |
| 30 | uint8_t type; /* see GSMTAP_TYPE_* */ |
| 31 | uint8_t timeslot; /* timeslot (0..7 on Um) */ |
| 32 | |
| 33 | uint16_t arfcn; /* ARFCN (frequency) */ |
| 34 | uint8_t noise_db; /* noise figure in dB */ |
| 35 | uint8_t signal_db; /* signal level in dB */ |
| 36 | |
| 37 | uint32_t frame_number; /* GSM Frame Number (FN) */ |
| 38 | |
| 39 | uint8_t burst_type; /* Type of burst, see above */ |
| 40 | uint8_t antenna_nr; /* Antenna Number */ |
| 41 | uint16_t res; /* reserved for future use (RFU) */ |
| 42 | |
| 43 | } __attribute__((packed)); |
| 44 | |
| 45 | |
| 46 | /* PCAP related definitions */ |
| 47 | #define TCPDUMP_MAGIC 0xa1b2c3d4 |
| 48 | #ifndef LINKTYPE_GSMTAP |
| 49 | #define LINKTYPE_GSMTAP 2342 |
| 50 | #endif |
| 51 | struct pcap_timeval { |
| 52 | int32_t tv_sec; |
| 53 | int32_t tv_usec; |
| 54 | }; |
| 55 | |
| 56 | struct pcap_sf_pkthdr { |
| 57 | struct pcap_timeval ts; /* time stamp */ |
| 58 | uint32_t caplen; /* lenght of portion present */ |
| 59 | uint32_t len; /* length of this packet */ |
| 60 | }; |
| 61 | |
| 62 | #endif /* _GSMTAP_H */ |